Power Systems Which of the following transformer is used in sub station for operating a protective relay? All of these capacitor voltage transformer auto transformer distribution transformer All of these capacitor voltage transformer auto transformer distribution transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs. 5. 20. 7. 3. 5. 20. 7. 3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which one of the following relays has the capability of anticipating the possible major fault in a transformer? Over fluxing relay Differential relay Buchholz relay Over current relay Over fluxing relay Differential relay Buchholz relay Over current relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 4, 10 4, 0.4 100, 0.4 100, 10 4, 10 4, 0.4 100, 0.4 100, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of low alternator efficiency high energy loss in condenser low steam turbine mechanical efficiency high energy loss in boilers low alternator efficiency high energy loss in condenser low steam turbine mechanical efficiency high energy loss in boilers ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gas turbine power plants for maximum efficient may have Reheating. Multistage compression. All of above. Heat exchangers. Reheating. Multistage compression. All of above. Heat exchangers. ANSWER DOWNLOAD EXAMIANS APP
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